DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerHow to erase permanent DTC
Description
OUTLINE
When a DTC is stored in ECM
When a DTC is stored in ECM and MIL is ON, a permanent DTC is erased with MIL
shutoff if the same malfunction
is not detected after performing the driving pattern for MIL shutoff three times
in a raw.
*1: When the same malfunction is detect ...
Exhaust valve timing control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN Communication line.
SYSTEM DESCRIPTION
This mechanism magnetically controls cam phases continuously with the fixed
operating angle of the exhaust
valve.
The ECM receives ...
ECU diagnosis information
TCM
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Fail-safe
The TCM has an electrical fail-safe mode. In this mode
TCM operates even if there is an error in a main electronic
control input/output signal circuit.
FAIL-SAFE FUNCTION
If any malf ...